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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >In vivo experimental study to investigate cytogenotoxicity of a contaminated estuary from Southeastern Brazilian Coast
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In vivo experimental study to investigate cytogenotoxicity of a contaminated estuary from Southeastern Brazilian Coast

机译:在体内实验研究中探讨巴西海岸污染河口的细胞遗传毒性

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摘要

The aim of this study was to evaluate cytogenotoxicity in mammalian cells induced by ingestion of superficial water from SESS. For this purpose, surface water was collected from two points of SESS: Sao Vicente Channel (SVC) and Piacaguera Channel (PIC). Four groups (n = 5) of adult male Wistar (8 weeks old) received for 5 days: (a) filtered tap water (water control), (b) tap water with 2.4% of NaCl (saline control), (c) estuarine water from PIC and (d) estuarine water from SVC. Results demonstrated that Ki67 immunoexpression was higher in hepatocytes exposed to both sampling site, while caspase-3 demonstrated downregulation in rat liver exposed to estuarine water. There was also significant increase in micronuclei frequency in bone marrow cells and hepatocytes, and DNA damage in blood and liver of rats exposed to estuarine water from SVC and PIC. In summary, studies with complex mixtures, such as contaminated estuarine water are important since this work confirmed by experiments using in vivo mammalian cells of rats that SESS water are genotoxic, mutagenic and cytotoxic, denoting concern for environmental health.
机译:本研究的目的是评估通过从Sess摄取浅表水诱导的哺乳动物细胞中的细胞诱导毒性。为此目的,从Sess的两点收集地表水:Sao Vicente通道(SVC)和PiacaGuera通道(PIAC)。 1次(N = 5)成年雄性Wistar(8周龄)收到5天:(a)过滤自来水(水控制),(b)自来水,含有2.4%的NaCl(盐水管),(c)来自PIC和(D)来自SVC的酯水的酯水。结果表明,暴露于两种采样部位的肝细胞中Ki67免疫表达较高,而Caspase-3在暴露于偏摩尔水中的大鼠肝脏下展示下调。骨髓细胞和肝细胞中的微核频率显着增加,以及从SVC和PIC暴露于河口水中的血液和血液中的DNA损伤。总之,具有复杂混合物的研究,例如污染的偏卤素水是重要的,因为通过在大鼠的大鼠体内哺乳动物细胞中使用实验证实的这项工作是遗传毒性,诱变和细胞毒性的,表示对环境健康的关注。

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